/***
Copyright (c) 2016 CommonsWare, LLC
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy
of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, either express or implied. See the License for the specific
language governing permissions and limitations under the License.
Covered in detail in the book _The Busy Coder's Guide to Android Development_
https://commonsware.com/Android
*/
package com.commonsware.android.retrofit;
import android.content.AsyncTaskLoader;
import android.content.Context;
import android.os.OperationCanceledException;
import retrofit.RestAdapter;
public class QuestionsLoader extends AsyncTaskLoader<SOQuestions> {
final private StackOverflowInterface so;
private SOQuestions lastResult;
public QuestionsLoader(Context context) {
super(context);
RestAdapter restAdapter=
new RestAdapter.Builder().setEndpoint("https://api.stackexchange.com")
.build();
so=restAdapter.create(StackOverflowInterface.class);
}
@Override
protected void onStartLoading() {
super.onStartLoading();
if (lastResult!=null) {
deliverResult(lastResult);
}
else {
forceLoad();
}
}
@Override
synchronized public SOQuestions loadInBackground() {
if (isLoadInBackgroundCanceled()) {
throw new OperationCanceledException();
}
return(so.questions("android"));
}
@Override
public void deliverResult(SOQuestions data) {
if (isReset()) {
// actual cleanup, if any
}
lastResult=data;
if (isStarted()) {
super.deliverResult(data);
}
}
@Override
protected void onStopLoading() {
super.onStopLoading();
cancelLoad();
}
@Override
protected void onReset() {
super.onReset();
onStopLoading();
// plus any actual cleanup
}
}